fig3
From: Fabrication of MOF-derived porous Au@Co-ZnO nanostructures with excellent C2H5OH sensing performance

Figure 3. XPS spectra of Au@Co-ZnO nanostructure and high-resolution spectra of O 1s of different samples. (A) Full spectrum of Au@Co-ZnO; (B) High-resolution spectra of Zn 2p of Au@Co-ZnO; (C) High-resolution spectra of Co 2p of Au@Co-ZnO; (D) High-resolution spectra of Au 4f of Au@Co-ZnO; (E) High-resolution spectra of O 1s of Au@Co-ZnO; (F) High-resolution spectra of O 1s of Co-ZnO; (G) High-resolution spectra of O 1s of ZnO. XPS: X-ray photoelectron spectroscopy.